@extends('layouts.portal')
@section('title', 'Attendance register')
@section('subtitle', ($batch->course?->title ?? 'Batch').' · '.$batch->batch_code.' · '.($batch->trainer?->name ?? $batch->trainer_name ?? 'no trainer'))
@section('actions')
  <a class="btn btn-secondary btn-sm" href="{{ route('admin.attendance.index') }}"><x-icon name="arrow-left" :size="16"/> All batches</a>
  <a class="btn btn-secondary btn-sm" href="{{ route('admin.batches.show', $batch) }}"><x-icon name="calendar" :size="16"/> Batch &amp; classes</a>
  <a class="btn btn-primary btn-sm" href="{{ route('admin.attendance.export', $batch) }}"><x-icon name="download" :size="16"/> Export CSV</a>
@endsection

@section('content')
@php
  $min = $batch->minAttendance();
  $low = $roster->filter(fn ($r) => $r['percent'] !== null && $r['percent'] < $min);
  $avg = $roster->whereNotNull('percent')->avg('percent');
  $letters = ['present' => 'P', 'late' => 'L', 'absent' => 'A', 'excused' => 'E'];
@endphp

<div class="kpis ad-kpis">
  <div class="card kpi"><span class="ico"><x-icon name="users" :size="20"/></span><span>Learners</span><b>{{ $roster->count() }}</b><small>active in this batch</small></div>
  <div class="card kpi violet"><span class="ico"><x-icon name="calendar-check" :size="20"/></span><span>Registers taken</span><b>{{ $sessions->count() }}</b><small>{{ $pending->count() }} waiting</small></div>
  <div class="card kpi green"><span class="ico"><x-icon name="trending-up" :size="20"/></span><span>Average attendance</span><b>{{ $avg !== null ? rtrim(rtrim(number_format($avg, 1), '0'), '.').'%' : 'n/a' }}</b><small>minimum {{ $min }}%</small></div>
  <div class="card kpi {{ $low->isNotEmpty() ? 'red' : 'green' }}"><span class="ico"><x-icon name="alert" :size="20"/></span><span>Below minimum</span><b>{{ $low->count() }}</b><small>{{ $low->isNotEmpty() ? 'highlighted below' : 'everyone is on track' }}</small></div>
</div>

@if($pending->isNotEmpty())
<section class="panel">
  <div class="panel-head"><h2>Registers waiting</h2></div>
  @foreach($pending as $s)
    <div class="list-row"><span class="ad-chip ad-red"><x-icon name="user-check" :size="18"/></span><div class="grow"><b>{{ $s->displayTitle() }}</b><div class="xs muted">{{ $s->starts_at->format('D d M Y, g:i A') }}</div></div><a class="btn btn-primary btn-sm" href="{{ route('admin.attendance.sheet', $s) }}">Mark attendance</a></div>
  @endforeach
</section>
@endif

<section class="panel">
  <div class="panel-head">
    <h2>Register</h2>
    <div class="ad-legend" aria-label="Legend"><span class="ad-cell p">P</span> Present <span class="ad-cell l">L</span> Late <span class="ad-cell a">A</span> Absent <span class="ad-cell e">E</span> Excused</div>
  </div>
  @if($roster->isEmpty())
    <x-empty icon="users" title="No active learners" text="Learners appear here once their enrollment is active."/>
  @elseif($sessions->isEmpty())
    <x-empty icon="calendar-check" title="No registers taken yet" text="The matrix fills in after the first class register is saved."><a class="btn btn-secondary btn-sm" href="{{ route('admin.batches.show', $batch) }}">View classes</a></x-empty>
  @else
  <div class="table-wrap ad-matrix-wrap" style="border:0;border-radius:0">
    <table class="table ad-matrix">
      <thead>
        <tr>
          <th class="ad-sticky">Learner</th>
          @foreach($sessions as $s)<th class="ad-mh"><a href="{{ route('admin.attendance.sheet', $s) }}" title="{{ $s->displayTitle() }}. Open register to edit">{{ $s->starts_at->format('d M') }}</a></th>@endforeach
          <th class="num">Attendance</th>
        </tr>
      </thead>
      <tbody>
      @foreach($roster as $r)
        @php $u = $r['user']; $isLow = $r['percent'] !== null && $r['percent'] < $min; @endphp
        <tr class="{{ $isLow ? 'ad-low' : '' }}">
          <td class="ad-sticky"><a href="{{ route('admin.students.show', $u) }}"><b>{{ $u->name }}</b></a><div class="xs muted">{{ $u->email }}</div></td>
          @foreach($sessions as $s)
            @php $rec = $records[$u->id][$s->id] ?? null; $st = $rec->status ?? 'absent'; @endphp
            <td class="ad-mc"><span class="ad-cell {{ strtolower($letters[$st]) }}" title="{{ ucfirst($st) }}{{ $rec && $rec->note ? ': '.$rec->note : (! $rec ? ' (no entry)' : '') }}"><span class="sr-only">{{ ucfirst($st) }}</span><span aria-hidden="true">{{ $letters[$st] }}</span></span></td>
          @endforeach
          <td class="num nowrap">
            @if($r['percent'] !== null)<b class="{{ $isLow ? 'ad-bad' : '' }}">{{ rtrim(rtrim(number_format($r['percent'], 1), '0'), '.') }}%</b>@else<span class="muted">n/a</span>@endif
            <div class="xs muted">{{ $r['present'] }}P {{ $r['late'] }}L {{ $r['absent'] }}A {{ $r['excused'] }}E</div>
          </td>
        </tr>
      @endforeach
      </tbody>
    </table>
  </div>
  @endif
</section>
@endsection